Loom



April 2K8, 1931. v UNDSJQ 1,802,820

i LOOM Filed Nov. 18, 1929 4 sheets-sheet-fl 9S 46 n nvenon 42 'Z7 Verne:` Lnsjo BYMMMM April 28, 1931.4 V, LlNDsJ 1,802,820

I LOOM Filed Nov. 1a, 1929 4 sheets-sheet' 3 77 72 58' nveor. Ver ner Lndsjo byd/wamwkf Patented Apr. 28, 1931 UNITE A'VEIRiNER LINDSJ, OF HOPEDALE, MASSACHUSETTS, ASSGNGR T0 DRAPER CORPORA- TION, F HGPEDALE, MASSACEUSETTS, A. CORPORATON OF MAINE LOOM Application filed November 18, Serial No. 407,916.

This invention relates to improve-ments in looms and the principal object or' the invention is to provide power-actuated mechanism for facilitating pick-out of a broken lilling, or for the purpose of removing the filling which is laid following a mispick.

ln usual operation of the loom the actuation of the knock-on mechanism of the loom is such that upon stoppage of the loom, upon detection of `failure of lling7 the lay is in engagement with or in proximity to the fell of the cloth. In order to obtain access to the faulty iilling thread itis necessary for the weaver to move the lay away from the fell oi' the cloth and it is also desirable so to position the shed-'forming mechanism as to open the shed in which the mispick occurred, thereby enabling the faulty filling to be readily withdrawn. To accomplish this the weaver usually grasps the hand Wheel or the loom and rotates the same in a direction to actuate the moving parts in a reverso direction to that of tneir normal op crations. lt is dillicult to run the looms bacliwardly where the looms are wide and heavy and particularly in multiple harness looms, and one of .the objects of the present invention is to provideI means by which the loom may be operated in 'a reverse direction by the power of the loom until the lay is well baci; of the fell to permit access to the faulty filling.

A further o ject of the invention is to provino means also operable by power to actua'te the shed-forming' mechanism in such a manner as to open the shed in which the rnispick occurred, thereby permitting easy removal oi the faulty filling.

A further object of the invention is to provide mechanism for accomplishing this purpose which can be readily applied to usual types or"- looms.

A preferred embodiment of the invention is illustrated herein as applied to a multipleh-arness loom in whieh the movements of the harnesses are controlled by levers which are actua-ted by cams secured to a drum upon an auxiliary cam shaft.

Inasmuch als the invention is embodied in a usual type of loom only such portions of the loom are illustrated in the drawings as are necessary to show the application of the invention thereto.

in the drawings:

Fig. l isa side elevation of a portion of the loom side illustrating the driving mechamsm;

Fig. 2 is an elevationof a portion of the opposite side of the loom to that shown in Fig. l;

Fig. 3 is an end elevation viewed from the rear of the loom;

Fig. 4 is a vertical section7 longitudinally of the loom., viewed toward the loom side, and illustrating the levers and. other mechanisms for controlling` the positioning` of the loom mechanisms for pick-out;

Fig. 5 is a detail view illustrating the means for locking the controlling mechanism for positioning `the loom for pickeout vagainst operation during the normal running of the loom; and7 Fig. 6 is a plan view of a portion of the mechanism kfor controlling the position of the pinion through which reverse movement is imparted to the loom.

The loom illustrated in the accompanying drawings comprises the usual loom sides l and 2 with a. bracket 3 built out from the loom side l to support the journals for the driving shaft l upon which is rotatably mounted a driving member 5, preferably in the form of a large gear which is actuated by a pinion 6 upon a shaft 7 of an electric motor. The usual clutch is provided. for connecting the gear 5to the driving shaft 4 and is controlled through a yoked lever 8 which is actuated through a lever 9 by a slide 10 upon the end of the starting rod 11 which extends across the loom. and is connected by a toggle mechanism l2 and a link 13 to the lower end 14. of the starting. lever 15- Which is ulcrumed upon a stud 16. The usual brake lever 17 is also fulcrumed upon the stud 16 and is engaged by a boss 18 upon the starting lever in such a manner that when the starting lever is drawn to starting position the brake lever is also actuated to release the usual spring actuated. braking mechanism.

When the clutch upon the shaft l is in HUI engagement with the main driving gear 5, a pinion 19 upon the main driving shaft actuates a gear 20 upon the main cam shaft 21. The gear 20 engages a gear 22 upon the main crank shaft 23, the relation of the gears 2O and 22 being such as to provide the usual two-to-one drive of the crank shaft.

The lay 24, which is mounted upon swords 25, is actuated from the main crank shaft in the usual manner, and usual mechanism (not shown) is also provided for actuating the picker stick 26 from the cam shaft.

The loom is provided with a usual controlling mechanism which, in case the shuttle fails to box, actua-tes a dagger carried by the lay to engage a frog which, upon the forward movement of the lay, moves the starting lever vand brake lever from running position to knock-off position, shown in Fig. 2, and permits the application of a brake through a usual brake-applying spring.

In the particular type of loom shown the harnesses (not shown) are reciprocated by harness-actuating levers 27 which are fulcrumed upon a shaft 28 mounted in suitable brackets extending from the loom side. The harness levers are actuated by cams 29 which are secured to an auxiliary cam shaft 30. |The cam shaft 30 has secured to it a bevel gear 31 which is driven by a pinion 32 on the main cam shaft 21. A bevel gear 33 upon the main cam shaft 21 engages a complementary gear 34 upon the shaft which operates the take-up mechanism of the loom. p

The mechanisms above described are those usual in looms of this type.

In the usual operation of such looms when failure of filling or mispick occurs, the loom is stopped and in order to position the lay and shed properly for pick-outs the loom is turned backward by a hand wheel 35 which is secured to the main crank shaft 23.

In wide looms, and particularly multiple harness looms, the weaver is compelled to use a great force to turn`the loom backwardly for pick-out and strong weavers are required to operate such looms. The principal object of the present invention is to provide an easily actuated controlling mechanism operable after the stoppage of the loom to cause the power-actuated mechanism to reverse the direction of movement of the movable parts of the loom for the purpose of withdrawing the lay from the fell of the cloth and to open the shed in which the faulty filling lies, or in which the mispick occurred.

This is accomplished in the present invention by providing a manually controlled means operable after the release of the connection between the continuously operated main driving means and the mechanisms which actuate the movable parts of the loom to reverse the direction of movement of all of the actuating parts of the loom, thereby enabling the lay to be withdrawn a desired distance from the fell of the cloth. In some instances such reverse movement of the actuating mechanisms of the loom will position the shed properly to facilitate pick-out. In other instances, further movement of the shed-forming mechanism is required. The invention, therefore, contemplates the provision of other manually-controlled means for causing the driving mechanism of the looml to continue the actuation of the shed-forming mechanism alone until the harnesses open the shed in which the faulty filling lies, or the mispick occurred.

In the preferred embodiment of the invention illustrated herein this is accomplished, after disengagement of the driving member from the driving shaft and stoppage of the loom, by the provision of manually-controlled auxiliary power transmitting mechanism operable by said driving member to actuate the movable parts of the loom in a reverse direction through the shaft of the harness-actuating cams, other manually-controlled means also being provided for disconnecting said auxiliary cam shaft from the mechanism Jhich actuates the other movable parts of the loom.

The particular mechanism comprises a pulley 36 preferably having a V-shaped periphery 37 adapted to engage a complementary J-shaped face 38 in a pulley 39 which is fixdly secured to the rotatable driving memrIhe pulley 36, which normally is out of engagement with the pulley 39, is rotatably mounted upon a stud 40 projecting from the upper end of an arm 41, the lower end of which is provided with a boss which is ixedly secured to a sleeve 42 which extends across the loom and is rotatably mounted in suitable bearings in the loom side and in a bracket 43 carried by one of the stands 44 which supports the auxiliary cam shaft for actuating the harness levers.`

The sleeve 42 has rigidly secured to it an arm 4 5 which is connected by a link 46 with a substantially horizontal arm 47 of a bell crank lever 48 which is pivotally mounted upon aV stud 49 extending from the arch 50 of the loom. fI`he upper end of the bell crank lever 48 is provided with a handle 51 and also with a hook or latch 52 which engages a keeper 53 secured to one of the members of the loom arch. The connection is such that when the latch 52 is disconnected and the handle 51 pulled forwardly, the arm 47 of the lever will raise the link 46, thereby rocking the arm which is secured to the sleeve in a direction to move the pulley 36 into engage# ment with the pulley 39 upon the rotatable driving member.

rIhe pulley 36 has secured to it a sprocket gear 54 which actuates a sprocket chain 55 to drive a sprocket gear 56 upon a countershaft 57 which is journalled in and extends longinil.

tudinally through the sleeve 42. The countershaft 57 has upon its opposite end a Worm 58 which engages a Worm gear 59 xedly secured to a short shaft 60 the ends of which are mounted in bearings 61 and 62 carried by the stand which supports the auxiliary harnessactuating cam shaft. The shaft 60 has slidably feathered upon it a. pinion 63 which is adapted to engage a gear 64 which is fixedly secured to the auxiliary cam shaft 30.

A spiral spring 65 surrounding the shaft 60 and interposed between the hub of the Worm gear 59 and the hub 66 of the gear 63 tends to force the gear 63 into `engagement with the gear 64 of the cam shaft. It is, however, normally held out of engagement With the gear 64 by a lever 67, (see Fig. 3), having a yoke 68 provided with studs which engage a groove 69 .upon the hub 66 of the pinion 63. The lever 67 is provided with a boss 70 which is fulcrumed upon a stud 7l carried by .a bracket 72 mounted on the bracket 44 aforesaid. The .opposite end of the lever 67 is provided with a stud 73 which extends into a slot 74 in a link 75 which is pivotally connected to an arm 7 6 having a boss 77 which is lixedly secured to the sleeve 42.

The arm 76 is so positioned upon the sleeve 42 that when the sleeve is in normal position such that its arm 4i supports the pulley 36 out of engagement with the pulley 39 of the rotatable driving member, the lever` 67 will be held in a position to remove the pinion 63 from engagement with the gear 64 and against the tension of the spiral spring 65. lVhen, however, the sleeve is rocked by actuation of the handle 5i of the bell crank lever 48 in a direction to move the pulley 36 into l engagement With the pulley 39 of the driving gear, the arm 76 of the sleeve 42 will be rotated in a direction to permit the spring 65 to force the pinion 63 into engagement with the gear 64 and such engagement Will be effected before the pulley 36 frictionally engages the pulley 39 upon the rotatable driving member.

Continued movement of the lever 5l Will thereafter cause frictional driving engagement between the pulley 36 and the pulley 39, thereby causing the pu ley 36 to actuate the sprocket gear 56, thus rotating the auxiliary shaft 57, the Worm 58 and Worm gear 59 to rotate the shaft 60 and through the pinion, which is feathered upon it, to rotate the gear 64, thereby in turn driving the cam shaft and other movable parts of the loom in a reverse direction. The extent of such reverse direc tion of movement is, of course, manually controlled by the handle 5l of the bell crank lever. Consequently, when it is desired to stop the reverse movement of the parts of the loom the handle 5l mayT be raised and secured in raised position by the latch 52.

By reason of this construction the lay may bewithdrawn from the fell of the :cloth a desired distance and in many instances the shedforming mechanism positioned properly to permit 'pick-out. In other instances the timing of the parts of the loom is such that further movement of the shed-controlling mechanism is required properly to position the harnesses for pick-out. In order to permit such further positioning of Vthe harness mechanism by the power mechanism of the loom, manually controlled means are provided for disconnecting from the auxiliary cam shaft the mechanisms for actuating other parts of the loom.

This is 'accomplished by providing a manuallyaoperable clutch for connecting the gear 32 to the main camshaft 2l. This clutch, as illustrated herein, comprises a clutch member 7 8 which is feathered upon the main cam shaft and provided with a clutch face 79 positioned to vengage a complementary :clutch face 8O upon the gear '32 which is rotatably mounted upon the `cam shaft and engages the gear 3l upon the auxiliary cam vshaft 3() as heretofore described. The hub of the clutch member 'T8 is provided with a groove 8l which receives the offset end 82 of the arm 83 of va bell crank lever which is fulcrumed upcn stud shaft 84 carried by a bracket 85 mounted upon the stand which supports the auxiliary cam shaft. The other arm '86 of this bell crank lever is pivotally connected to a member87 having a'screvv threaded socket which adjustably receives the lower end of a screvv threaded rod 88, the upper end of which is connected by a screu7 connection to the offset lower end 89 of a link 90, the upperend of which is pivotally connected to the arm 91 of a bell crank lever which is fulcrumed upon stud 92 upon a bracket 93 upon the arch 50 cf the loom. The other arm 94 of this bell crank lever is pivotally connected by a link 95 to the arm 96 of a controlling lever `97 Which is also fulcrumed upon the bracket 93 and is provided with a handle 98. Vhen the handle 98 is pulled to the position illustrated in Fig. 4, the link 88 Will be raised,.thereby rocking the bell crank lever 86, 83, about its fulcrum 84, withdrawing the clutch member 78 from engagementwvith the gear 32, thereby releasing all mechanisms other than the auxiliary cam shaft gear from driving relation to the rotatable 'driving member. -V

In the operation of the mechanisms above describedthe brake lever 17 T\vill first be actuated to release the brake. Thereafter, the operator Will pull the controlling handle 5l of the bell crank lever 48 to establish driving relation between the auxiliary driving shaft 57 andthe harness cam actuating shaft 30, and upon further movement of the handle 5l will bring the pulley 36 into engagement with the pulley 39 upon the rotatable driving member. llVhen such engagement is established all the actuating parts of the loom will be moved in a r verse direction, thereby withdrawing the lay from the fell of the cloth and relieving the tension of the take-up. 1When the lay has been removed from the tell of the cloth the desired distance the operator will actuate the handle 98 to disengage the clutch member 78 from the complementary clutch member upon the gear 32, thereby disconnecting the mechanism for actuating all of the parts oi the loom from the gear 32 which, during the reverse movement of the parts of the loom, actuates the main cam shaft. Such disconnection, however, permits the auxiliary power transmitting mechanism to continue the reverse direction of movement of the harness-actuating cam shaft.

When the continuedreverse -rotation of the cam shaft has positioned the shed-'forming mechanism properly for pick-out the handle 51 may be restored to and latched in inoperative position illustrated in Fig. 2. When the handle 51 is thus restored to its normal inoperative position, the sleeve e2 is rotated in a direction lirst to remove the pulley 36 from engagement with the pulley 39, thereby disconnecting the drive, and thereafter to actuate the arm 76 sufficiently to rock the lever 67 about its fulcrum and thereby withdraw the pinion G3 from engagement with the gear 64 upon the harnessactuating cam shaft, thus re-establishing the parts in position to permit the usual actuation of the loom.

Means desirably are provided for preventing actuation of the loom-reversing mechanism during the normal operation oit the loom. This is accomplished by providing the starting rod 11 with an arm 99 avhich, when the starting rod is moved longitudinally to starting position, is moved. into the path oic a collar 10() which is a-djustably secured to the link i6 which connects the arm i7 of the bell crank lever to the arm 45 upon the sleeve 4t2. The arm 99 upon the starting rod is provided with an extension which, when the starting rodl ll is moved longitudinally to starting position, will enter a slot lOl in a bracket 102 secured to the loom side,

thereby providing a rigid abutment which, when engaged by the colla-r 100 upon the rod 4-5, will positively prevent upward movement thereof. This safety mechanism. however, forms no part of the present invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

l. In a loom comprising continuously operating driving mechanism, and mechanism for actuating the movable .parts of the loom releasably connected thereto, means for facilitating pick-out comprising manually controlled means operable after release of said connection to said driving means to cause said Lacasse driving means to produce a reverse movement of the parts of the loom, whereby the lay may be withdrawn from the fell of the cloth, and manually controlled means operable thereafter to cause said driving mechanism to actuate the shed-forming mechanism to a desired pick-out position with the driving mechanism disconnected from the mechanisms for actuating other parts of the loom.

2. In a loom comprising continuously operating driving mechanism, and mechanism for actuating the movable parts ot the loom releasably connected thereto, means for facilitating pick-out comprising manually controlled means operable after release of said connection to said driving means to cause said driving means to produce a reverse movement of the parts of the loom, whereby the lay may be withdrawn from the fell of the cloth, and manually controlled means operable thereafter to disconnect the actuating means for other parts of the loom than the shed-forming mechanism from the driving mechanism, whereby he power-actuated reverse movement of the shed-forming mechanism may be continued to a desired pick-out position.

3. In a loom comprising continuously oprating driving mechanism, mechanism tor actuating the movable parts of the loom releasably connected thereto, means for facilitating pick-out comprising manually controlled means operable after release of said connection to said driving means to cause said driving mechanism, acting through the harness-actuating mechanism, to reverse the directionot` movement of the mechanisms for actuating the movable parts of the loom and thereby to withdraw the lay from the fell of the cloth, and manually controlled means operable during such reverse movement to disconnect rom the harness-actuating means the mechanisms for actuating other movable parts of the loom, whereby the power-actuated reverse movement of the shed-forming mechanism may be continued to a desired pick-out position.

el. In a loom comprising continuously operating driving mechanism, mechanism releasably'connected thereto for actuating the movable parts of the loom including a cam shaft having cams operable to actuate the shed-forming mechanism, means vfor facilitating pick-out comprising manually controlled means operable after release of said connection to said driving means to cause said driving mechanism to actuate the movable parts of the loom through said cam shaft in a reverse direction whereby the lay may be withdrawn from the fell of the cloth, and

Vmanually controlled means Jfor disconnecting from said cam shaft the mechanisms for actuating other movable parts of the loom, whereby the reverse movement of the shedforming mechanism may be continued to the desired pick-out position.

iliary power-transmitting means and said cam shaft and thereafter to establish driving engagement with said main driving member operable to actuate the movable parts of the loom in a reverse direction, whereby the lay may be Withdrawn from the fell of the cloth, and manually controlled means operable to release from actuation by said cam shaft the means for actuating other parts of the loom, whereby the power-actuated reverse move- V ment of the shed-formino mechanism ma be Continued t-o a desired pick-out position.

6. In a loom comprising a continuously rotating main driving' member, mechanism, re-

leasably connected thereto, for actuating the movable parts of the loom including a cam shaft having cams operable to actuate the shed-forming mechanism, means for facilitating pick-out comprising auxiliary powertransmitting means intermediate of said cam shaft and said main driving member including a countershaft, means for rotating said countershaft normally disengaged from, but movable into engagement with said main driving member, releasable means for transmitting rotation from said countershaft to said cam shaft, manually controlled means operable first to establish driving relation between said countershaft and said cam shaft and thereafter to establish engagement between the means for rotating said countershaft and said main driving member operable to actuate the movable parts of the loom in a reverse direction, whereby the lay may be Withdrawn from the fell of the cloth, and manually controlled means operable to release from actuation bv said cam shaft the means for actuating other parts of the loom, whereby the power-actuated reverse movement of the shed-forming mechanism may be continued to a desired pick-out position.

7. In a loom comprising a continuously rotating main driving member, mechanism, releasably connected thereto, for actuating the movable parts of t-he loom including a cam shaft having cams operable to actuate the shed-forming mechanism and provided with a gear, means for facilitating pick-out comprising auxiliary power-transmitting means intermediate of said cam shaft and said main driving member including a countershaft, a

sleeve on said countershaft provided With an arm having a pulley rotatably mounted thereupon positioned frictionally to engage said rotatable main driving member, but normally held from such engagement, sprocket and chain connection between said pulley and said auxiliary driving shaft, means for actuating said oam` shaft from said auxiliary lshaft including a spring actuated pinion normally held out of engagement with 'the gear of said cam shaft, manually controlled means connected to said sleeve operable to rotate said sleeve and thereby permit said pinion to be forced by its spring into engagement With said cam shaft gear and thereafter to move said pulley into engagement with said main driving member operable to actuate the movable parts of the loom in a reverse direction, whereby the lay may be Withdrawn from the fell of the cloth, and manually controlled means operable to release from actuation by said cam shaft the means for actuating other parts of the loom, whereby' the power-actuated reverse movement of the shed-forming mechanism may be continued to a desired pick-out position.

In testimony whereof, I have signed my name to this specification.

VERNER LINDSJO. 

